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Rotary compressor

A rotary compressor and compression mechanism technology, applied in the direction of rotary piston machines, rotary piston pumps, rotary piston/swing piston pump components, etc., can solve the problem of low compressor efficiency, fast ejected gas flow rate, Problems such as peak pressure rise, to achieve the effect of suppressing overcompression, improving sealing performance, and preventing power loss from increasing

Inactive Publication Date: 2004-06-30
DAIKIN IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is to say, because of the narrow angle range of the previous swing compressor, the discharge stroke is carried out in a short time, the flow rate of the discharge gas is fast, the peak pressure rises and the loss caused by the overcompression of the refrigerant is large, and the compressor the efficiency will decrease

Method used

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Embodiment approach 1

[0060] Hereinafter, Embodiment 1 of the present invention will be described in detail with reference to the drawings.

[0061] Such as figure 1 As shown in FIG. 2 , the rotary compressor ( 1 ) of Embodiment 1 is a so-called swing compressor. This compressor (1) accommodates a compression mechanism (20) and a compressor motor (30) in a casing (10), and is constituted as a fully hermetic compressor. The above-mentioned compressor (1) is installed, for example, in a refrigerant circuit of an air conditioner, and is capable of sucking in, compressing, and then discharging a refrigerant.

[0062] The shell (10) is composed of a cylindrical body part (11) and mirror plates (12, 13) respectively fixed on the upper and lower end parts of the body part (11). At a predetermined position on the carcass part (11) close to the bottom, a suction pipe (14) is provided which runs through the carcass part (11). On the other hand, the upper mirror plate (12) is provided with a discharge pip...

Embodiment approach 2

[0094] Next, Embodiment 2 of the present invention will be described. In this second embodiment, as shown in FIG. 4 , the shape of the outer peripheral surface of the rocking piston ( 28 ) and the shape of the inner peripheral surface of the cylinder chamber ( 25 ) are different from those of the first embodiment.

[0095] The outer peripheral surface of the rocking piston (28) of this embodiment 2 is made into a scroll shape such as an involute with respect to the blade (28b), and the diameter is from the suction side (28a(s)) to the discharge side (28a( d)) gradually becomes smaller.

[0096] In addition, the shape of the inner peripheral surface of the cylinder chamber (25) is made to consider the inclination caused by the rocking motion of the rocking piston (28) on the involute. That is, in this embodiment, the shape of the inner peripheral surface of the cylinder chamber (25) is formed based on the envelope when the rocking piston rocks.

[0097] In addition, in this E...

Embodiment approach 3

[0104] Next, Embodiment 3 of the present invention will be described.

[0105] In Embodiment 3, the basic structure is the same as that of the compressor (1) in Embodiment 1, and only a part of the rocking piston (28) is different. Therefore, in Embodiment 3, the description of the configuration of parts other than the rocking piston (28) will be omitted.

[0106]The rocking piston (28) of Embodiment 3 is as shown in Fig. 5(a) and Fig. 5(b), and a gap is formed on the surface of the front part (22) side and the surface of the back part (23) side. Part (28c). The gap portion (28c) is formed on the suction side (28a(s)) where the amount of protrusion is larger than the discharge side (28a(d)) of the rocking piston (28), and on the discharge side (28a(d)). d)) is not formed.

[0107] In addition, in the above-mentioned embodiments, the material of the rocking piston (28) is not specified, and the rocking piston (28) of the third embodiment uses a metal material with a light sp...

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Abstract

The outer peripheral surface of a swing piston (28) is formed in a non-circular form. The inner peripheral surface of a cylinder chamber (25) is formed on a basis of an envelope curve of the outer peripheral surface of the swing piston (28) obtained at the time of its swing. The outer peripheral surface of the swing piston (28) and the inner peripheral surface of the cylinder chamber (25) are formed in, e.g., an ovoid shape so that as compared to the case in which such inner and outer peripheral surfaces are formed in a circular form, a shorter compression cycle and a longer discharge cycle can be obtained at the time of swing of the swing piston (28). As a result, an overcompression loss when a refrigerant is discharged in a swing compressor can be reduced.

Description

technical field [0001] The present invention relates to a rotary compressor, in particular to an oscillating type (piston oscillating) which is integrally arranged on the vane of the oscillating piston and supported by a cylinder, and the oscillating piston performs revolution in the cylinder chamber while oscillating. type) rotary compressor. Background technique [0002] Conventional rotary compressors include an oscillating compressor including an oscillating piston disclosed in JP-A-9-88852. This swing compressor is generally used to compress gas refrigerant in the refrigerant circuit of the refrigerator. [0003] Oscillating compressors, generally, the rough cross-section of the compression mechanism is as follows Figure 8 composition shown. This compression mechanism (100) includes a cylinder (102) formed by partitioning the cylinder chamber (101), a drive shaft (103) arranged to pass through the cylinder chamber (101), and an eccentric shaft p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01C21/10F04C18/32F04C23/00F04C29/00
CPCF04C18/322F04C29/0057F04C23/008F01C21/106F04C23/001F04C18/356
Inventor 增田正典加藤胜三芝本祥孝
Owner DAIKIN IND LTD
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